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BUG: Series[EA].astype(str) works #20581

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Merged
merged 1 commit into from
Apr 3, 2018
Merged

BUG: Series[EA].astype(str) works #20581

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2 changes: 1 addition & 1 deletion pandas/core/internals.py
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Original file line number Diff line number Diff line change
Expand Up @@ -655,7 +655,7 @@ def _astype(self, dtype, copy=False, errors='raise', values=None,

# astype formatting
else:
values = self.values
values = self.get_values()

else:
values = self.get_values(dtype=dtype)
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5 changes: 5 additions & 0 deletions pandas/tests/extension/base/casting.py
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Expand Up @@ -16,3 +16,8 @@ def test_tolist(self, data):
result = pd.Series(data).tolist()
expected = list(data)
assert result == expected

def test_astype_str(self, data):
result = pd.Series(data[:5]).astype(str)
expected = pd.Series(data[:5].astype(str))
self.assert_series_equal(result, expected)
7 changes: 6 additions & 1 deletion pandas/tests/extension/json/test_json.py
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Expand Up @@ -127,7 +127,12 @@ def test_sort_values_missing(self, data_missing_for_sorting, ascending):


class TestCasting(base.BaseCastingTests):
pass
@pytest.mark.xfail
def test_astype_str(self):
"""This currently fails in NumPy on np.array(self, dtype=str) with

*** ValueError: setting an array element with a sequence
"""


class TestGroupby(base.BaseGroupbyTests):
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